<?php
class Response
{
	public $returnCode;
	function __construct($returnCode)
	{
		$this->returnCode = $returnCode;
	}	
}

class BaseQueryResp extends Response
{
	public $querySum;
	function __construct($returnCode, $querySum)
	{
		parent::__construct($returnCode);
		
		$this->querySum = $querySum;
	}
}

?>